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16.9-2x=4.1
We move all terms to the left:
16.9-2x-(4.1)=0
We add all the numbers together, and all the variables
-2x+12.8=0
We move all terms containing x to the left, all other terms to the right
-2x=-12.8
x=-12.8/-2
x=6+0.8/2
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